Leaves fall off from branches in winter due to
Formation of abscission layer
Shortening of day length
Fall in temperature
All the above
In $3/8 $ alternate phyllotaxy $(Called\,\, ostastichous)$
An example of fruit which is dispersed by bird is
Staminodes occur in family
Potato and sweet potato
In Coriandrum, the prolongation of thalamus beyond the carpel is called as